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          <h1 class="post-title" itemprop="name headline">初识Go语言-环境配置</h1>
        

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        <h2 id="环境变量"><a href="#环境变量" class="headerlink" title="环境变量"></a>环境变量</h2><figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br></pre></td><td class="code"><pre><span class="line"><span class="function">C:\<span class="title">Users</span>\<span class="title">zhangzt</span>&gt;<span class="title">go</span> <span class="title">env</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GO111MODULE</span>=<span class="title">on</span> //启用 <span class="title">gomod</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOARCH</span>=<span class="title">amd64</span> </span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOBIN</span>=</span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOCACHE</span>=<span class="title">C</span>:\<span class="title">Users</span>\<span class="title">zhangzt</span>\<span class="title">AppData</span>\<span class="title">Local</span>\<span class="title">go</span>-<span class="title">build</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOEXE</span>=.<span class="title">exe</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOFLAGS</span>=</span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOHOSTARCH</span>=<span class="title">amd64</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOHOSTOS</span>=<span class="title">windows</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOOS</span>=<span class="title">windows</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOPATH</span>=<span class="title">C</span>:\<span class="title">Users</span>\<span class="title">zhangzt</span>\<span class="title">go</span>;<span class="title">C</span>:\<span class="title">Users</span>\<span class="title">zhangzt</span>\<span class="title">go1</span> --工作目录 可以多个 用;分隔</span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOPROXY</span>=</span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GORACE</span>=</span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOROOT</span>=<span class="title">C</span>:\<span class="title">Go</span> --<span class="title">go</span>安装位置</span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOTMPDIR</span>=</span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOTOOLDIR</span>=<span class="title">C</span>:\<span class="title">Go</span>\<span class="title">pkg</span>\<span class="title">tool</span>\<span class="title">windows_amd64</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GCCGO</span>=<span class="title">gccgo</span> //<span class="title">go</span>垃圾回收 <span class="title">gc</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">CC</span>=<span class="title">gcc</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">CXX</span>=<span class="title">g</span>++</span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">CGO_ENABLED</span>=1</span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOMOD</span>=</span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">CGO_CFLAGS</span>=-<span class="title">g</span> -<span class="title">O2</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">CGO_CPPFLAGS</span>=</span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">CGO_CXXFLAGS</span>=-<span class="title">g</span> -<span class="title">O2</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">CGO_FFLAGS</span>=-<span class="title">g</span> -<span class="title">O2</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">CGO_LDFLAGS</span>=-<span class="title">g</span> -<span class="title">O2</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">PKG_CONFIG</span>=<span class="title">pkg</span>-<span class="title">config</span></span></span><br><span class="line"><span class="function"><span class="title">set</span> <span class="title">GOGCCFLAGS</span>=-<span class="title">m64</span> -<span class="title">mthreads</span> -<span class="title">fno</span>-<span class="title">caret</span>-<span class="title">diagnostics</span> -<span class="title">Qunused</span>-<span class="title">arguments</span> -<span class="title">fmessage</span>-<span class="title">length</span>=0 -<span class="title">fdebug</span>-<span class="title">prefix</span>-<span class="title">map</span>=<span class="title">C</span>:\<span class="title">Users</span>\<span class="title">zhangzt</span>\<span class="title">AppData</span>\<span class="title">Local</span>\<span class="title">Temp</span>\<span class="title">go</span>-<span class="title">build736731342</span>=/<span class="title">tmp</span>/<span class="title">go</span>-<span class="title">build</span> -<span class="title">gno</span>-<span class="title">record</span>-<span class="title">gcc</span>-<span class="title">switches</span></span></span><br></pre></td></tr></table></figure>

<h2 id="Go项目目录结构-gopath模式"><a href="#Go项目目录结构-gopath模式" class="headerlink" title="Go项目目录结构  (gopath模式)"></a>Go项目目录结构  (gopath模式)</h2><figure class="highlight cmd"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="function">F:\<span class="title">GOPROJECT</span> --工作目录</span></span><br><span class="line"><span class="function">├─<span class="title">bin</span> --<span class="title">go</span>编译可执行文件存放路径</span></span><br><span class="line"><span class="function">├─<span class="title">pkg</span> --<span class="title">go</span>编译包时，生成的.<span class="title">a</span>文件存放路径</span></span><br><span class="line"><span class="function">└─<span class="title">src</span> --源码路径。按照<span class="title">golang</span>默认约定，<span class="title">go</span> <span class="title">run</span>，<span class="title">go</span> <span class="title">install</span>等命令的当前工作路径（即在此路径下执行上述命令）。</span></span><br><span class="line"><span class="function">    ├─<span class="title">myproject.com</span> --域名    目录结构为 <span class="title">src</span> -&gt;域名-&gt;具体项目-&gt; 源码</span></span><br><span class="line"><span class="function">    │  └─<span class="title">project</span> --项目</span></span><br><span class="line"><span class="function">    └─<span class="title">myproject1.com</span></span></span><br></pre></td></tr></table></figure>

<hr>
<p><a href="https://code.visualstudio.com/" target="_blank" rel="noopener">VSCode</a>安装后，安装中文和go插件，然后执行以下命令</p>
<ul>
<li>go get -u -v github.com/nsf/gocode</li>
<li>go get -u -v github.com/rogpeppe/godef</li>
</ul>
<blockquote>
<p>克隆 2个 git clone http s://github.com/golang/tools.git git clone http s://github.com/golang/lint.git 到 src/golang.org/x 目录下</p>
</blockquote>
<ul>
<li><p>go get golang.org/x/lint/golint</p>
</li>
<li><p>go get -u -v github.com/lukehoban/go-find-references</p>
</li>
<li><p>go get -u -v github.com/lukehoban/go-outline</p>
</li>
<li><p>go get -u -v sourcegraph.com/sqs/goreturns</p>
</li>
<li><p>go get -u -v golang.org/x/tools/cmd/gorename</p>
</li>
<li><p>go get -u -v github.com/tpng/gopkgs</p>
</li>
<li><p>go get -u -v github.com/newhook/go-symbols</p>
</li>
</ul>

      
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  <script type="text/javascript">
    // Popup Window;
    var isfetched = false;
    var isXml = true;
    // Search DB path;
    var search_path = "search.xml";
    if (search_path.length === 0) {
      search_path = "search.xml";
    } else if (/json$/i.test(search_path)) {
      isXml = false;
    }
    var path = "/" + search_path;
    // monitor main search box;

    var onPopupClose = function (e) {
      $('.popup').hide();
      $('#local-search-input').val('');
      $('.search-result-list').remove();
      $('#no-result').remove();
      $(".local-search-pop-overlay").remove();
      $('body').css('overflow', '');
    }

    function proceedsearch() {
      $("body")
        .append('<div class="search-popup-overlay local-search-pop-overlay"></div>')
        .css('overflow', 'hidden');
      $('.search-popup-overlay').click(onPopupClose);
      $('.popup').toggle();
      var $localSearchInput = $('#local-search-input');
      $localSearchInput.attr("autocapitalize", "none");
      $localSearchInput.attr("autocorrect", "off");
      $localSearchInput.focus();
    }

    // search function;
    var searchFunc = function(path, search_id, content_id) {
      'use strict';

      // start loading animation
      $("body")
        .append('<div class="search-popup-overlay local-search-pop-overlay">' +
          '<div id="search-loading-icon">' +
          '<i class="fa fa-spinner fa-pulse fa-5x fa-fw"></i>' +
          '</div>' +
          '</div>')
        .css('overflow', 'hidden');
      $("#search-loading-icon").css('margin', '20% auto 0 auto').css('text-align', 'center');

      $.ajax({
        url: path,
        dataType: isXml ? "xml" : "json",
        async: true,
        success: function(res) {
          // get the contents from search data
          isfetched = true;
          $('.popup').detach().appendTo('.header-inner');
          var datas = isXml ? $("entry", res).map(function() {
            return {
              title: $("title", this).text(),
              content: $("content",this).text(),
              url: $("url" , this).text()
            };
          }).get() : res;
          var input = document.getElementById(search_id);
          var resultContent = document.getElementById(content_id);
          var inputEventFunction = function() {
            var searchText = input.value.trim().toLowerCase();
            var keywords = searchText.split(/[\s\-]+/);
            if (keywords.length > 1) {
              keywords.push(searchText);
            }
            var resultItems = [];
            if (searchText.length > 0) {
              // perform local searching
              datas.forEach(function(data) {
                var isMatch = false;
                var hitCount = 0;
                var searchTextCount = 0;
                var title = data.title.trim();
                var titleInLowerCase = title.toLowerCase();
                var content = data.content.trim().replace(/<[^>]+>/g,"");
                var contentInLowerCase = content.toLowerCase();
                var articleUrl = decodeURIComponent(data.url);
                var indexOfTitle = [];
                var indexOfContent = [];
                // only match articles with not empty titles
                if(title != '') {
                  keywords.forEach(function(keyword) {
                    function getIndexByWord(word, text, caseSensitive) {
                      var wordLen = word.length;
                      if (wordLen === 0) {
                        return [];
                      }
                      var startPosition = 0, position = [], index = [];
                      if (!caseSensitive) {
                        text = text.toLowerCase();
                        word = word.toLowerCase();
                      }
                      while ((position = text.indexOf(word, startPosition)) > -1) {
                        index.push({position: position, word: word});
                        startPosition = position + wordLen;
                      }
                      return index;
                    }

                    indexOfTitle = indexOfTitle.concat(getIndexByWord(keyword, titleInLowerCase, false));
                    indexOfContent = indexOfContent.concat(getIndexByWord(keyword, contentInLowerCase, false));
                  });
                  if (indexOfTitle.length > 0 || indexOfContent.length > 0) {
                    isMatch = true;
                    hitCount = indexOfTitle.length + indexOfContent.length;
                  }
                }

                // show search results

                if (isMatch) {
                  // sort index by position of keyword

                  [indexOfTitle, indexOfContent].forEach(function (index) {
                    index.sort(function (itemLeft, itemRight) {
                      if (itemRight.position !== itemLeft.position) {
                        return itemRight.position - itemLeft.position;
                      } else {
                        return itemLeft.word.length - itemRight.word.length;
                      }
                    });
                  });

                  // merge hits into slices

                  function mergeIntoSlice(text, start, end, index) {
                    var item = index[index.length - 1];
                    var position = item.position;
                    var word = item.word;
                    var hits = [];
                    var searchTextCountInSlice = 0;
                    while (position + word.length <= end && index.length != 0) {
                      if (word === searchText) {
                        searchTextCountInSlice++;
                      }
                      hits.push({position: position, length: word.length});
                      var wordEnd = position + word.length;

                      // move to next position of hit

                      index.pop();
                      while (index.length != 0) {
                        item = index[index.length - 1];
                        position = item.position;
                        word = item.word;
                        if (wordEnd > position) {
                          index.pop();
                        } else {
                          break;
                        }
                      }
                    }
                    searchTextCount += searchTextCountInSlice;
                    return {
                      hits: hits,
                      start: start,
                      end: end,
                      searchTextCount: searchTextCountInSlice
                    };
                  }

                  var slicesOfTitle = [];
                  if (indexOfTitle.length != 0) {
                    slicesOfTitle.push(mergeIntoSlice(title, 0, title.length, indexOfTitle));
                  }

                  var slicesOfContent = [];
                  while (indexOfContent.length != 0) {
                    var item = indexOfContent[indexOfContent.length - 1];
                    var position = item.position;
                    var word = item.word;
                    // cut out 100 characters
                    var start = position - 20;
                    var end = position + 80;
                    if(start < 0){
                      start = 0;
                    }
                    if (end < position + word.length) {
                      end = position + word.length;
                    }
                    if(end > content.length){
                      end = content.length;
                    }
                    slicesOfContent.push(mergeIntoSlice(content, start, end, indexOfContent));
                  }

                  // sort slices in content by search text's count and hits' count

                  slicesOfContent.sort(function (sliceLeft, sliceRight) {
                    if (sliceLeft.searchTextCount !== sliceRight.searchTextCount) {
                      return sliceRight.searchTextCount - sliceLeft.searchTextCount;
                    } else if (sliceLeft.hits.length !== sliceRight.hits.length) {
                      return sliceRight.hits.length - sliceLeft.hits.length;
                    } else {
                      return sliceLeft.start - sliceRight.start;
                    }
                  });

                  // select top N slices in content

                  var upperBound = parseInt('1');
                  if (upperBound >= 0) {
                    slicesOfContent = slicesOfContent.slice(0, upperBound);
                  }

                  // highlight title and content

                  function highlightKeyword(text, slice) {
                    var result = '';
                    var prevEnd = slice.start;
                    slice.hits.forEach(function (hit) {
                      result += text.substring(prevEnd, hit.position);
                      var end = hit.position + hit.length;
                      result += '<b class="search-keyword">' + text.substring(hit.position, end) + '</b>';
                      prevEnd = end;
                    });
                    result += text.substring(prevEnd, slice.end);
                    return result;
                  }

                  var resultItem = '';

                  if (slicesOfTitle.length != 0) {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + highlightKeyword(title, slicesOfTitle[0]) + "</a>";
                  } else {
                    resultItem += "<li><a href='" + articleUrl + "' class='search-result-title'>" + title + "</a>";
                  }

                  slicesOfContent.forEach(function (slice) {
                    resultItem += "<a href='" + articleUrl + "'>" +
                      "<p class=\"search-result\">" + highlightKeyword(content, slice) +
                      "...</p>" + "</a>";
                  });

                  resultItem += "</li>";
                  resultItems.push({
                    item: resultItem,
                    searchTextCount: searchTextCount,
                    hitCount: hitCount,
                    id: resultItems.length
                  });
                }
              })
            };
            if (keywords.length === 1 && keywords[0] === "") {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-search fa-5x" /></div>'
            } else if (resultItems.length === 0) {
              resultContent.innerHTML = '<div id="no-result"><i class="fa fa-frown-o fa-5x" /></div>'
            } else {
              resultItems.sort(function (resultLeft, resultRight) {
                if (resultLeft.searchTextCount !== resultRight.searchTextCount) {
                  return resultRight.searchTextCount - resultLeft.searchTextCount;
                } else if (resultLeft.hitCount !== resultRight.hitCount) {
                  return resultRight.hitCount - resultLeft.hitCount;
                } else {
                  return resultRight.id - resultLeft.id;
                }
              });
              var searchResultList = '<ul class=\"search-result-list\">';
              resultItems.forEach(function (result) {
                searchResultList += result.item;
              })
              searchResultList += "</ul>";
              resultContent.innerHTML = searchResultList;
            }
          }

          if ('auto' === 'auto') {
            input.addEventListener('input', inputEventFunction);
          } else {
            $('.search-icon').click(inputEventFunction);
            input.addEventListener('keypress', function (event) {
              if (event.keyCode === 13) {
                inputEventFunction();
              }
            });
          }

          // remove loading animation
          $(".local-search-pop-overlay").remove();
          $('body').css('overflow', '');

          proceedsearch();
        }
      });
    }

    // handle and trigger popup window;
    $('.popup-trigger').click(function(e) {
      e.stopPropagation();
      if (isfetched === false) {
        searchFunc(path, 'local-search-input', 'local-search-result');
      } else {
        proceedsearch();
      };
    });

    $('.popup-btn-close').click(onPopupClose);
    $('.popup').click(function(e){
      e.stopPropagation();
    });
    $(document).on('keyup', function (event) {
      var shouldDismissSearchPopup = event.which === 27 &&
        $('.search-popup').is(':visible');
      if (shouldDismissSearchPopup) {
        onPopupClose();
      }
    });
  </script>





  

  

  

  
  

  

  

  

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